Kids triathlons in UK
Find kids triathlons near me in UK for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.
Search by month
Search by place
MapEvents near me
Click an event for full event details, location, route, sustainability, what's included and how to enter.
- Sat 28 Jun
- £20
- Sat 28 Jun
- £20
ATW Childrens Triathlon Mallory Park | Tristart
Mallory Park Junior Triathlon: Where Dreams Take Flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.
- Enter online
- Traffic free
- Age 8-8
- 100 m lake swimming
- 1.5 km road cycling + 16 ft ascent
- 600 m road running + 20 ft ascent
- Sat 28 Jun
- £31
- Sat 28 Jun
- £31
ATW Childrens Triathlon Mallory Park | Tristar 1
Mallory Park Junior Triathlon: Where Dreams Take Flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.
- Enter online
- Traffic free
- Age 9-10
- 200 m lake swimming
- 4 km road cycling + 98 ft ascent
- 1.2 km road running
- Sat 28 Jun
- £31
- Sat 28 Jun
- £31
ATW Childrens Triathlon Mallory Park | Tristar 2
Mallory Park Junior Triathlon: Where Dreams Take Flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.
- Enter online
- Traffic free
- Age 11-12
- 300 m lake swimming
- 6 km road cycling + 79 ft ascent
- 1.8 km road running
- Sat 28 Jun
- £31
- Sat 28 Jun
- £31
ATW Childrens Triathlon Mallory Park | Tristar 3
Mallory Park Junior Triathlon: Where Dreams Take Flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.
- Enter online
- Traffic free
- Age 13-14
- 500 m lake swimming
- 8 km road cycling + 49 ft ascent
- 2.4 km road running
- Sat 28 Jun
- £31
- Sat 28 Jun
- £31
ATW Childrens Triathlon Mallory Park | Youth
Mallory Park Junior Triathlon: Where Dreams Take Flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.
- Enter online
- Traffic free
- Age 15-16
- 500 m lake swimming
- 8 km road cycling + 49 ft ascent
- 2.4 km road running
- Sun 29 Jun
- £30
- Sun 29 Jun
- £30
English Riviera Triathlon | TriStar 2
Start with a great sea swim in warm waters then on to the bikes for a closed road and flat bike leg. Finally there's a run with views of the sea. Torre Abbey Sands has excellent water quality.
- Chip timing
- Enter online
- Undulating
- Age 11-12
- 300 m sea swimming
- 5 km road cycling + 164 ft ascent
- 2 km road running
- Sun 29 Jun
- £33
- Sun 29 Jun
- £33
English Riviera Triathlon | TriStar 3
Start with a great sea swim in warm waters then on to the bikes for a closed road and flat bike leg. Finally there's a run with views of the sea. Torre Abbey Sands has excellent water quality.
- Chip timing
- Enter online
- Undulating
- Age 13-14
- 300 m sea swimming
- 10 km road cycling + 328 ft ascent
- 2.5 km road running + 106 ft ascent
- Sun 29 Jun
- £47
- Sun 29 Jun
- £47
English Riviera Triathlon | Super Sprint
Start with a great sea swim in warm waters then on to the bikes for a closed road and flat bike leg. Finally there's a run with views of the sea. Torre Abbey Sands has excellent water quality.
- Chip timing
- Enter online
- Undulating
- Age 15 & over
- 300 m sea swimming
- 10 km road cycling + 328 ft ascent
- 2.5 km road running + 106 ft ascent
- Sat 12 Jul
- £22.50-£25
- Entries close soon
- Sat 12 Jul
- £22.50-£25
- Entries close soon
Ripon Triathlon Festival | TriStar Start
Ripon is unique as the only open-water junior racing in the Yorkshire series! So give your juniors the most exciting triathlon experience this year. Bike and run are traffic-free on grass surface.
- Enter online
- Flat
- Traffic free
- Age 8-8
- 100 m lake swimming
- 1000 m mountain biking
- 600 m multi terrain running
- Sat 12 Jul
- £25-£27.50
- Entries close soon
- Sat 12 Jul
- £25-£27.50
- Entries close soon
Ripon Triathlon Festival | TriStar 1
Ripon is unique as the only open-water junior racing in the Yorkshire series! So give your juniors the most exciting triathlon experience this year. Bike and run are traffic-free on grass surface.
- Enter online
- Flat
- Traffic free
- Age 9-10
- 200 m lake swimming
- 2000 m mountain biking
- 1200 m xc running
- Sat 12 Jul
- £25-£27.50
- Entries close soon
- Sat 12 Jul
- £25-£27.50
- Entries close soon
Ripon Triathlon Festival | TriStar 2
Ripon is unique as the only open-water junior racing in the Yorkshire series! So give your juniors the most exciting triathlon experience this year. Bike and run are traffic-free on grass surface.
- Enter online
- Flat
- Traffic free
- Age 11-12
- 300 m lake swimming
- 4000 m mountain biking
- 1800 m xc running
- Sat 12 Jul
- £27.50-£30
- Entries close soon
- Sat 12 Jul
- £27.50-£30
- Entries close soon
Ripon Triathlon Festival | TriStar 3
Ripon is unique as the only open-water junior racing in the Yorkshire series! So give your juniors the most exciting triathlon experience this year. Bike and run are traffic-free on grass surface.
- Enter online
- Flat
- Traffic free
- Age 13-14
- 500 m lake swimming
- 6000 m mountain biking
- 2400 m xc running
- Sat 12 Jul
- £27.50-£30
- Entries close soon
- Sat 12 Jul
- £27.50-£30
- Entries close soon
Ripon Triathlon Festival | Youth
Ripon is unique as the only open-water junior racing in the Yorkshire series! So give your juniors the most exciting triathlon experience this year. Bike and run are traffic-free on grass surface.
- Enter online
- Flat
- Traffic free
- Age 15-16
- 500 m lake swimming
- 6000 m mountain biking
- 2400 m xc running
- Sat 19 Jul
- £40-£60
- Sat 19 Jul
- £40-£60
Belvoir Castle | Triathlon 11-12 years
Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 11-12
- 300 m lake swimming
- 4 km road cycling
- 1.6 km road running
- Sat 19 Jul
- £35-£60
- Sat 19 Jul
- £35-£60
Belvoir Castle | Triathlon 9-10 years
Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 9-10
- 200 m lake swimming
- 4.2 km road cycling
- 1.3 km road running
- Sun 20 Jul
- £50-£60
- Sun 20 Jul
- £50-£60
Belvoir Castle | Triathlon 15-16 years
Race through the beautiful castle grounds in an event for all levels - even beginners. Recruit your friends to join in too then celebrate afterwards in the festival village.
- Chip timing
- Enter online
- Age 15-16
- 500 m lake swimming
- 8 km road cycling
- 2.4 km road running
- Sun 20 Jul
- £45-£60
- Sun 20 Jul
- £45-£60
Belvoir Castle | Triathlon 13-14 years
Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 13-14
- 400 m lake swimming
- 8 km road cycling
- 2.4 km road running
- Sun 17 Aug
- £21
- Sun 17 Aug
- £21
ATW Oundle Children’s Triathlon | Tristart
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 8-8
- 50 m pool swimming
- 800 m mountain biking + 0 ft ascent
- 600 m trail running + 3 ft ascent
- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Tristar 1
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 9-10
- 150 m pool swimming
- 2 km mountain biking + 26 ft ascent
- 1.2 km trail running
- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Tristar 2
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 11-12
- 200 m pool swimming
- 4 km mountain biking
- 1.8 km trail running
- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Tristar 3
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 13-14
- 300 m pool swimming
- 6 km mountain biking
- 2.4 km trail running
- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Youth
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 15-16
- 400 m pool swimming
- 8 km mountain biking
- 3 km trail running
- Sat 27 Sep
- £35-£60
- Sat 27 Sep
- £35-£60
Hever Castle Triathlon and Multisport Festival | Triathlon 9-10 years
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
- Chip timing
- Enter online
- Age 9-10
- 200 m lake swimming
- 4.2 km road cycling
- 1.3 km road running
- Sun 28 Sep
- £45-£60
- Sun 28 Sep
- £45-£60
Hever Castle Triathlon and Multisport Festival | Triathlon 13-14 years
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
- Chip timing
- Enter online
- Age 13-14
- 400 m lake swimming
- 8.4 km road cycling
- 2.5 km road running + 69 ft ascent
- Sun 28 Sep
- £40-£60
- Sun 28 Sep
- £40-£60
Hever Castle Triathlon and Multisport Festival | Triathlon 11-12 years
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
- Chip timing
- Enter online
- Age 11-12
- 300 m lake swimming
- 4.2 km road cycling
- 1.8 km road running